首页 > 最新文献

2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)最新文献

英文 中文
Relationship between macroeconomic variables and Malaysia available Shariah Indices 宏观经济变量与马来西亚可用伊斯兰教法指数的关系
Pub Date : 2012-12-03 DOI: 10.2139/ssrn.2661279
Norshamshina Mat Isa, Zunairah Hasan, A. Abdullah
This paper aims to study the relationship between local and foreign macroeconomic variables and Malaysia available Shariah Indices. In our study, we used the Vector Error Correction (VEC) framework by initially looking at the long run and short run relationship between Malaysia available Shariah indices (i.e. KLSI, FTSE Bursa Malaysia EMAS Shariah Index and FTSE Bursa Malaysia Hijrah Shariah Index) and the macroeconomic variables via the Johansen cointegration technique. Monthly data during the twenty two-year period (from January 1990 to December 2011) has been collected from DataStream and tested. The findings show positive relationship between the variables from 1990 to 2006. However, mix results were found after the period till 2011. This study then conclude that the standardized set of macroeconomic variables that specified by earlier researchers still can be relied but in careful policy formulation.
本文旨在研究国内外宏观经济变量与马来西亚现有伊斯兰教法指数之间的关系。在我们的研究中,我们使用了矢量误差校正(VEC)框架,通过约翰森协整技术,初步研究了马来西亚可用的伊斯兰教法指数(即KLSI、马来西亚富时证券交易所EMAS伊斯兰教法指数和马来西亚富时证券交易所Hijrah伊斯兰教法指数)与宏观经济变量之间的长期和短期关系。从DataStream中收集了1990年1月至2011年12月22年期间的月度数据并进行了测试。结果表明,从1990年到2006年,各变量之间存在正相关关系。然而,在2011年之后,发现了混合结果。这项研究随后得出结论,早期研究人员指定的标准化宏观经济变量集仍然可以依赖,但需要仔细制定政策。
{"title":"Relationship between macroeconomic variables and Malaysia available Shariah Indices","authors":"Norshamshina Mat Isa, Zunairah Hasan, A. Abdullah","doi":"10.2139/ssrn.2661279","DOIUrl":"https://doi.org/10.2139/ssrn.2661279","url":null,"abstract":"This paper aims to study the relationship between local and foreign macroeconomic variables and Malaysia available Shariah Indices. In our study, we used the Vector Error Correction (VEC) framework by initially looking at the long run and short run relationship between Malaysia available Shariah indices (i.e. KLSI, FTSE Bursa Malaysia EMAS Shariah Index and FTSE Bursa Malaysia Hijrah Shariah Index) and the macroeconomic variables via the Johansen cointegration technique. Monthly data during the twenty two-year period (from January 1990 to December 2011) has been collected from DataStream and tested. The findings show positive relationship between the variables from 1990 to 2006. However, mix results were found after the period till 2011. This study then conclude that the standardized set of macroeconomic variables that specified by earlier researchers still can be relied but in careful policy formulation.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124549344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Comparative study of cubic Pm3m between SnZrO3 and PbZrO3 by first principles calculation 用第一性原理计算比较了SnZrO3和PbZrO3的立方Pm3m
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504405
M. Taib, M. K. Yaakob, M. Rasiman, F. W. Badrudin, O. H. Hassan, M. Yahya
The properties of perovskite SnZrO3 (SZ) in cubic (Pm3m space group) was investigated via first principles calculation using the density functional theory (DFT) as implemented in CASTEP computer code. The lattice parameter of PbZrO3 (PZ) was calculated as a reference compound and the results show an accuracy values relative to the experimental values. In this first-principle calculations, the exchange-correlation functional is based on LDA-CAPZ which give underestimate in structural lattice parameters with typical errors of 2%. The elastic constants and their pressure dependence were calculated up to 30 GPa, and independent elastic constants (C11, C12, and C44), bulk modules, B are obtained and analyzed. Density of state (DOS) studies reveal that the anion O 2p, cation Sn 5p/Pb 5p and Zr 4d states of SZ and PZ play an important role which correspond to the top of valence states and bottom of conduction band. Meanwhile, direct band gap at X-X point is respectively obtained for both SZ and PZ along the higher symmetry direction in the Brillouin zone. The born effective charges (BEC) values of Sn and Zr (in SZ) have respectively been found to be +4.26 and +7.53. This is attributed to the bond charge response to the displacement caused by the strong covalency between cation orbital and O 2p. Results reveal anion O 2p, cation Sn 5p and Zr 4d states have also played an important role in optical transition in which they respectively correspond to the top of valence states and bottom of conduction band. The results of prototype SZ were compared and showed in good agreement with the calculated results of PZ.
利用CASTEP计算机代码实现的密度泛函理论(DFT)第一性原理计算,研究了立方(Pm3m空间群)中钙钛矿SnZrO3 (SZ)的性质。计算了PbZrO3 (PZ)作为参考化合物的晶格参数,结果与实验值有一定的准确性。在这个第一性原理计算中,交换相关函数是基于LDA-CAPZ的,它给出了结构晶格参数的低估,典型误差为2%。在30gpa范围内计算了弹性常数及其与压力的关系,得到了独立的弹性常数(C11、C12、C44)、体模量、B。态密度(DOS)研究表明,SZ和PZ的阴离子o2p、阳离子Sn 5p/Pb 5p和Zr 4d态起着重要作用,它们对应于价态的顶部和导带的底部。同时,SZ和PZ在布里渊区沿高对称方向分别在X-X点处获得直接带隙。Sn和Zr(在SZ中)的出生有效电荷(BEC)分别为+4.26和+7.53。这是由于阳离子轨道与o2p之间的强共价引起的位移引起的键电荷响应。结果表明,阴离子O 2p、阳离子Sn 5p和Zr 4d态在光学跃迁中也起着重要作用,它们分别对应于价态的顶部和导带的底部。对样机的计算结果进行了比较,结果与PZ的计算结果吻合较好。
{"title":"Comparative study of cubic Pm3m between SnZrO3 and PbZrO3 by first principles calculation","authors":"M. Taib, M. K. Yaakob, M. Rasiman, F. W. Badrudin, O. H. Hassan, M. Yahya","doi":"10.1109/CHUSER.2012.6504405","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504405","url":null,"abstract":"The properties of perovskite SnZrO3 (SZ) in cubic (Pm3m space group) was investigated via first principles calculation using the density functional theory (DFT) as implemented in CASTEP computer code. The lattice parameter of PbZrO3 (PZ) was calculated as a reference compound and the results show an accuracy values relative to the experimental values. In this first-principle calculations, the exchange-correlation functional is based on LDA-CAPZ which give underestimate in structural lattice parameters with typical errors of 2%. The elastic constants and their pressure dependence were calculated up to 30 GPa, and independent elastic constants (C11, C12, and C44), bulk modules, B are obtained and analyzed. Density of state (DOS) studies reveal that the anion O 2p, cation Sn 5p/Pb 5p and Zr 4d states of SZ and PZ play an important role which correspond to the top of valence states and bottom of conduction band. Meanwhile, direct band gap at X-X point is respectively obtained for both SZ and PZ along the higher symmetry direction in the Brillouin zone. The born effective charges (BEC) values of Sn and Zr (in SZ) have respectively been found to be +4.26 and +7.53. This is attributed to the bond charge response to the displacement caused by the strong covalency between cation orbital and O 2p. Results reveal anion O 2p, cation Sn 5p and Zr 4d states have also played an important role in optical transition in which they respectively correspond to the top of valence states and bottom of conduction band. The results of prototype SZ were compared and showed in good agreement with the calculated results of PZ.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"24 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116639283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Effect of nitrogen-doping concentration in carbon nanotubes on cathodic performance for proton exchange membrane fuel cell 碳纳米管中氮掺杂浓度对质子交换膜燃料电池阴极性能的影响
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504422
W. Wong, W. R. Daud, A. Mohamad, A. Kadhum, K. Loh, E. Majlan
Electrode fabricated by N-doped carbon nanotubes has been identified as a potential catalyst for proton exchange membrane fuel cell (PEMFC) application. N-doped carbon nanotubes have shown their ability in electro-reduction of oxygen at the fuel cell cathode. This paper presents a study on the effect of nitrogen-doping level in carbon nanotubes towards the reduction of oxygen. The half cell test studied using cyclic voltammetry analysis has shown a linear relationship between the nitrogen-doping degree in CNT and the cathodic activity. The sample which exhibited the highest cathodic activity was character by its higher structural defects on the surface that is responsible to serve as the active sites for cathodic oxygen reduction reaction.
氮掺杂碳纳米管电极被认为是质子交换膜燃料电池(PEMFC)的潜在催化剂。氮掺杂碳纳米管在燃料电池阴极电还原氧方面表现出了良好的性能。本文研究了碳纳米管中氮掺杂水平对氧还原的影响。利用循环伏安法研究了碳纳米管中氮掺杂程度与阴极活性之间的线性关系。表现出最高阴极活性的样品的特征是其表面有较高的结构缺陷,这些缺陷负责充当阴极氧还原反应的活性位点。
{"title":"Effect of nitrogen-doping concentration in carbon nanotubes on cathodic performance for proton exchange membrane fuel cell","authors":"W. Wong, W. R. Daud, A. Mohamad, A. Kadhum, K. Loh, E. Majlan","doi":"10.1109/CHUSER.2012.6504422","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504422","url":null,"abstract":"Electrode fabricated by N-doped carbon nanotubes has been identified as a potential catalyst for proton exchange membrane fuel cell (PEMFC) application. N-doped carbon nanotubes have shown their ability in electro-reduction of oxygen at the fuel cell cathode. This paper presents a study on the effect of nitrogen-doping level in carbon nanotubes towards the reduction of oxygen. The half cell test studied using cyclic voltammetry analysis has shown a linear relationship between the nitrogen-doping degree in CNT and the cathodic activity. The sample which exhibited the highest cathodic activity was character by its higher structural defects on the surface that is responsible to serve as the active sites for cathodic oxygen reduction reaction.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117235786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Oil sorption capacity of kapok fiber 木棉纤维的吸油能力
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504439
A. Kartina, M. Suhaila
Kapok fiber (Ceiba Pentandra) is a natural plant fiber that poses excellent hydrophobic-oleophilic characteristics, due to the presence penetrable hollow lumen structure and waxy material on its surface. Different types of oil of different viscosity are employed to test the selectivity nature and the sorption capacity of 1 g fiber. The types of oil used are diesel (low viscosity), palm oil based cooking oil (medium viscosity) and lubricating oil (high viscosity). Kapok fiber managed to absorb all the oil with the lubricating oil is the highest amount absorbed. Following the selectivity test, the morphology of raw kapok fiber and the oil absorbed kapok fibers is analysed using scanning electron microscopy (SEM). The fiber that absorbed different types of oils is relatively quite stable as they show little change in morphology compared to the raw kapok. Kapok fiber shows great potential as oil sorbent on any type of oil owing to its excellent hydrophobicity-oleophilicity characteristic.
木棉纤维(Ceiba Pentandra)是一种天然植物纤维,因其具有可渗透的中空腔体结构和表面的蜡质材料而具有优异的疏水亲油特性。为了测试 1 克纤维的选择性和吸附能力,我们使用了不同粘度的油类。使用的油类包括柴油(低粘度)、棕榈油基食用油(中等粘度)和润滑油(高粘度)。木棉纤维能够吸收所有的油,其中润滑油的吸收量最高。选择性测试后,使用扫描电子显微镜(SEM)分析了未加工木棉纤维和吸油木棉纤维的形态。与未加工的木棉纤维相比,吸收了不同类型油脂的木棉纤维形态变化很小,因此相对比较稳定。由于木棉纤维具有极佳的疏水性和亲油性,因此它作为任何类型油类的吸油剂都显示出巨大的潜力。
{"title":"Oil sorption capacity of kapok fiber","authors":"A. Kartina, M. Suhaila","doi":"10.1109/CHUSER.2012.6504439","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504439","url":null,"abstract":"Kapok fiber (Ceiba Pentandra) is a natural plant fiber that poses excellent hydrophobic-oleophilic characteristics, due to the presence penetrable hollow lumen structure and waxy material on its surface. Different types of oil of different viscosity are employed to test the selectivity nature and the sorption capacity of 1 g fiber. The types of oil used are diesel (low viscosity), palm oil based cooking oil (medium viscosity) and lubricating oil (high viscosity). Kapok fiber managed to absorb all the oil with the lubricating oil is the highest amount absorbed. Following the selectivity test, the morphology of raw kapok fiber and the oil absorbed kapok fibers is analysed using scanning electron microscopy (SEM). The fiber that absorbed different types of oils is relatively quite stable as they show little change in morphology compared to the raw kapok. Kapok fiber shows great potential as oil sorbent on any type of oil owing to its excellent hydrophobicity-oleophilicity characteristic.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127518150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Zn/ZnO and Zn/ZnO/TiO2 photocatalysts for degradation of Benzene-Toluene-Xylene in aqueous system Zn/ZnO和Zn/ZnO/TiO2光催化剂降解水中苯-甲苯-二甲苯
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504385
Hazlini Mohmad Ameran, R. Ali, W. A. Bakar
The aim of the present study is to investigate the catalytic activity of semiconductor materials on the degradation of Benzene-Toluene-Xylene (BTX) in aqueous system under UV light (6 W, λ = 354 nm). Two types of photocatalysts were prepared namely Zn/ZnO and Zn/ZnO/TiO2. Zn/ZnO film was prepared by anodic oxidation of zinc in NaOH with various concentrations. Zn/ZnO deposited with TiO2 photocatalyst was prepared by electrodeposition method. It was found that the optimum concentration for the electrolyte solution (NaOH) was 0.8 M. The pH value of the sample solution had influenced the photocatalytic activity of Zn/ZnO/TiO2 plate in degrading BTX solution. The most suitable pH for the degradation of BTX was pH 6. The most effective degradation of BTX solution using Zn/ZnO/TiO2 plate is 91.54% degradation under four hours of UV irradiation time. The Field Emission Scanning Electron Microscopy (FESEM) and Energy-dispersive X-ray spectroscopy (EDX) were applied to study the surface morphology of the Zn/ZnO plate and Zn/ZnO/TiO2 photocatalysts. The large porous surface of Zn/ZnO plate prepared by using 0.8 M NaOH contributed to large amount of TiO2 deposited onto the surface of the photocatalyst and excellent performance of Zn/ZnO/TiO2 on UV-Induced degradation of BTX solution.
本研究的目的是研究半导体材料在紫外光(6 W, λ = 354nm)下对水中苯-甲苯-二甲苯(BTX)的降解活性。制备了Zn/ZnO和Zn/ZnO/TiO2两种光催化剂。采用不同浓度的氢氧化钠对锌进行阳极氧化,制备了锌/ZnO薄膜。采用电沉积法在TiO2光催化剂上制备了Zn/ZnO薄膜。发现电解液(NaOH)的最佳浓度为0.8 m,样品溶液的pH值影响Zn/ZnO/TiO2板在降解BTX溶液中的光催化活性。降解BTX最适宜的pH为pH 6。在4小时的紫外照射下,Zn/ZnO/TiO2板对BTX溶液的最有效降解率为91.54%。采用场发射扫描电子显微镜(FESEM)和能量色散x射线能谱仪(EDX)研究了Zn/ZnO板和Zn/ZnO/TiO2光催化剂的表面形貌。使用0.8 M NaOH制备的Zn/ZnO板的大孔表面使得大量TiO2沉积在光催化剂表面,并且Zn/ZnO/TiO2在紫外诱导降解BTX溶液中表现优异。
{"title":"Zn/ZnO and Zn/ZnO/TiO2 photocatalysts for degradation of Benzene-Toluene-Xylene in aqueous system","authors":"Hazlini Mohmad Ameran, R. Ali, W. A. Bakar","doi":"10.1109/CHUSER.2012.6504385","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504385","url":null,"abstract":"The aim of the present study is to investigate the catalytic activity of semiconductor materials on the degradation of Benzene-Toluene-Xylene (BTX) in aqueous system under UV light (6 W, λ = 354 nm). Two types of photocatalysts were prepared namely Zn/ZnO and Zn/ZnO/TiO2. Zn/ZnO film was prepared by anodic oxidation of zinc in NaOH with various concentrations. Zn/ZnO deposited with TiO2 photocatalyst was prepared by electrodeposition method. It was found that the optimum concentration for the electrolyte solution (NaOH) was 0.8 M. The pH value of the sample solution had influenced the photocatalytic activity of Zn/ZnO/TiO2 plate in degrading BTX solution. The most suitable pH for the degradation of BTX was pH 6. The most effective degradation of BTX solution using Zn/ZnO/TiO2 plate is 91.54% degradation under four hours of UV irradiation time. The Field Emission Scanning Electron Microscopy (FESEM) and Energy-dispersive X-ray spectroscopy (EDX) were applied to study the surface morphology of the Zn/ZnO plate and Zn/ZnO/TiO2 photocatalysts. The large porous surface of Zn/ZnO plate prepared by using 0.8 M NaOH contributed to large amount of TiO2 deposited onto the surface of the photocatalyst and excellent performance of Zn/ZnO/TiO2 on UV-Induced degradation of BTX solution.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125893614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The preparation and characterization of sulfonated poly (ether ether ketone) and Cellulose Acetate (SPEEK-CA) membrane in proton exchange membrane fuel cells (PEMFCs) by UV-crosslink technique 质子交换膜燃料电池(pemfc)中磺化聚醚醚酮和醋酸纤维素(SPEEK-CA)膜的紫外交联制备及表征
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504390
Nordiana Nabilla Ramly, A. Ali
A new series of cross linked proton conducting membranes consists of sulfonated poly (ether ether ketone) (SPEEK) and Cellulose Acetate (CA) has been developed over a wide range of compositions; SPEEK1−xCAx where x= 0.002,0.004, 0.006, 0.008, 0.01. The polymer electrolyte membrane is prepared by solution cast technique. The results indicate that the proton conductivity of the membranes increase with increasing solid proton conducting material. FTIR analysis shows that the cross linking reaction is performed successfully. All the results indicate that these cross-linked membranes based on SPEEK/CA show good prospect for the use as proton exchange membrane.
一种由磺化聚醚醚酮(SPEEK)和醋酸纤维素(CA)组成的新型交联质子导电膜已被开发出来。SPEEK1−xCAx,其中x= 0.002,0.004, 0.006, 0.008, 0.01。采用溶液铸造法制备了聚合物电解质膜。结果表明,随着固体质子导电材料的增加,膜的质子电导率提高。FTIR分析表明,交联反应成功进行。结果表明,这些基于SPEEK/CA的交联膜作为质子交换膜具有良好的应用前景。
{"title":"The preparation and characterization of sulfonated poly (ether ether ketone) and Cellulose Acetate (SPEEK-CA) membrane in proton exchange membrane fuel cells (PEMFCs) by UV-crosslink technique","authors":"Nordiana Nabilla Ramly, A. Ali","doi":"10.1109/CHUSER.2012.6504390","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504390","url":null,"abstract":"A new series of cross linked proton conducting membranes consists of sulfonated poly (ether ether ketone) (SPEEK) and Cellulose Acetate (CA) has been developed over a wide range of compositions; SPEEK1−xCAx where x= 0.002,0.004, 0.006, 0.008, 0.01. The polymer electrolyte membrane is prepared by solution cast technique. The results indicate that the proton conductivity of the membranes increase with increasing solid proton conducting material. FTIR analysis shows that the cross linking reaction is performed successfully. All the results indicate that these cross-linked membranes based on SPEEK/CA show good prospect for the use as proton exchange membrane.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126009885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Comparison biosorption of heavy metal ions from single and multi metal synthetic solution by living Pleurotus ostreatus 活体平菇对单、多金属合成液中重金属离子的生物吸附比较
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504432
Arbanah Muhammad, Miradatul Najwa Muhd Rodhi, K. Hamid
The presence of heavy metals in the wastewater become a concern due to their toxicity effect to human health and environmental hazards. Conventional physical and chemical treatments are restricted because of their technical and economical constraints. One of the possible solutions is introducing biosorption method in heavy metals removal. The present study aim to evaluate the potential of Pleurotus ostreatus (P.ostreatus) fungus in the removal of Fe(II), Pb(II), Zn(II) and Cu(II) ions from single and multi metal synthetic solution. Throughout the study, the best operating treatment process were found when the pH of the solution was above 4 with 80.52, 45.20, 12.47 and 2.88% removal for Fe(II), Cu(II), Pb(II) and Zn(II); agitation speed of 150 rpm and temperature of 25°C. It was found that the removal of heavy metals is lower from single than multi metal solution. The biosorption preference order of P.ostreatus is Fe(II) > Cu(II) > Pb(II) > Zn(II). The results obtained validate that biosorption by P.ostreatus is a potential method in replacing conventional heavy metal removal and in the wastewater treatment.
由于重金属对人体健康和环境的毒性作用,废水中重金属的存在引起了人们的关注。传统的物理和化学处理由于技术和经济的限制而受到限制。其中一种可能的解决方案是引入生物吸附法去除重金属。本研究旨在评价平菇(Pleurotus ostreatus, P.ostreatus)真菌去除单金属和多金属合成溶液中Fe(II)、Pb(II)、Zn(II)和Cu(II)离子的潜力。研究结果表明,pH > 4时为最佳操作处理工艺,对Fe(II)、Cu(II)、Pb(II)、Zn(II)去除率分别为80.52%、45.20%、12.47%和2.88%;搅拌速度150转/分,温度25℃。结果表明,单金属溶液对重金属的去除率低于多金属溶液。P.ostreatus对Fe(II) > Cu(II) > Pb(II) > Zn(II)的生物吸附偏好顺序为:实验结果表明,平角假单胞菌的生物吸附是一种有潜力取代传统重金属去除方法和废水处理方法。
{"title":"Comparison biosorption of heavy metal ions from single and multi metal synthetic solution by living Pleurotus ostreatus","authors":"Arbanah Muhammad, Miradatul Najwa Muhd Rodhi, K. Hamid","doi":"10.1109/CHUSER.2012.6504432","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504432","url":null,"abstract":"The presence of heavy metals in the wastewater become a concern due to their toxicity effect to human health and environmental hazards. Conventional physical and chemical treatments are restricted because of their technical and economical constraints. One of the possible solutions is introducing biosorption method in heavy metals removal. The present study aim to evaluate the potential of Pleurotus ostreatus (P.ostreatus) fungus in the removal of Fe(II), Pb(II), Zn(II) and Cu(II) ions from single and multi metal synthetic solution. Throughout the study, the best operating treatment process were found when the pH of the solution was above 4 with 80.52, 45.20, 12.47 and 2.88% removal for Fe(II), Cu(II), Pb(II) and Zn(II); agitation speed of 150 rpm and temperature of 25°C. It was found that the removal of heavy metals is lower from single than multi metal solution. The biosorption preference order of P.ostreatus is Fe(II) > Cu(II) > Pb(II) > Zn(II). The results obtained validate that biosorption by P.ostreatus is a potential method in replacing conventional heavy metal removal and in the wastewater treatment.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123273992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Angle-driven model of throwing activity 投掷活动的角度驱动模型
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504318
N. Omar, A. Yaacob, S. H. Ismail, M. S. Salim
Biomechanical model of the human body can be used as an important tool in understanding the functional principles of human movement and joint coordination. Therefore, this paper presents the development of a two-dimensional angle driven simulation model of throwing activity using the inverse dynamics modeling system, where the motion, gravitational and external forces are used as input to allow computation of muscle forces and joint reactions. This paper considers the throwing activity of the dominant arm. Kane's method has been used to formulate the equations of motion which describes the upper limbs kinematics. There are three intersegment link involved that consists of scapula, lateral arm and forearm. Forearm and hand have been modeled as one rigid segment since wrist flexion was not a main contributor to the ball velocity at release during overarm throwing. By considering all the kinetics involved during throwing activity, this model able to calculate the value of torque at shoulder joint.
人体生物力学模型可以作为理解人体运动和关节协调功能原理的重要工具。因此,本文提出了利用逆动力学建模系统开发一个二维角度驱动的投掷活动仿真模型,其中运动,重力和外力作为输入,允许计算肌肉力和关节反应。本文考虑了优势臂的投掷活动。凯恩方法已被用来建立描述上肢运动学的运动方程。有三个节间连接受累,包括肩胛骨、侧臂和前臂。前臂和手被建模为一个刚性的部分,因为手腕屈曲不是在臂上投掷时释放球速度的主要贡献者。该模型考虑了投掷过程中所涉及的所有动力学,能够计算出肩关节处的扭矩值。
{"title":"Angle-driven model of throwing activity","authors":"N. Omar, A. Yaacob, S. H. Ismail, M. S. Salim","doi":"10.1109/CHUSER.2012.6504318","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504318","url":null,"abstract":"Biomechanical model of the human body can be used as an important tool in understanding the functional principles of human movement and joint coordination. Therefore, this paper presents the development of a two-dimensional angle driven simulation model of throwing activity using the inverse dynamics modeling system, where the motion, gravitational and external forces are used as input to allow computation of muscle forces and joint reactions. This paper considers the throwing activity of the dominant arm. Kane's method has been used to formulate the equations of motion which describes the upper limbs kinematics. There are three intersegment link involved that consists of scapula, lateral arm and forearm. Forearm and hand have been modeled as one rigid segment since wrist flexion was not a main contributor to the ball velocity at release during overarm throwing. By considering all the kinetics involved during throwing activity, this model able to calculate the value of torque at shoulder joint.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126724009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bijak Membaca — Applying Phonic Reading Technique and Multisensory Approach with interactive multimedia for dyslexia children 运用语音阅读技术和多感官方法与互动多媒体在阅读障碍儿童中的应用
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504375
Siti Zulaiha Ahmad, Nik Noor Amalina Amirah Nik Ludin, H. M. Ekhsan, A. F. Rosmani, M. Ismail
Reading difficulty is one of the major problems faced by dyslexic children. Reading skill is the most crucial ability as it is required in the upper level of discovery of knowledge. In this research, Phonic Reading Technique and Multisensory Approach are blended with interactive multimedia, which incorporates multimedia elements such as text, graphics, video, and animation. The manner of applying those techniques in “Bijak Membaca” is discussed. The contents of this application are specifically designed to visualize letters, words, sentences, and pronunciations in the Malay language for dyslexics, aged 7–8 years, with awareness of their characteristics. In order to evaluate the design of its content, heuristic testing is conducted among multimedia lecturers and IT undergraduates. The result reveals that the contents are well designed with the inclusion of Phonic Reading Technique, Multisensory Approach, and suitable multimedia elements. It is also concluded as interesting, user-friendly, attractive, valuable, and supportive.
阅读困难是诵读困难儿童面临的主要问题之一。阅读能力是最关键的能力,因为它需要在高层次的知识发现。在本研究中,语音阅读技术和多感官方法与交互式多媒体相结合,融合了文本、图形、视频和动画等多媒体元素。讨论了在“Bijak Membaca”中应用这些技术的方式。这个应用程序的内容是专门设计的可视化字母,单词,句子和马来语的发音,为7-8岁的诵读困难,与他们的特点的认识。为了评价其内容的设计,对多媒体讲师和信息技术本科生进行了启发式测试。结果表明,教材内容设计合理,采用了语音阅读法、多感官阅读法和适当的多媒体元素。它还被总结为有趣、用户友好、有吸引力、有价值和支持。
{"title":"Bijak Membaca — Applying Phonic Reading Technique and Multisensory Approach with interactive multimedia for dyslexia children","authors":"Siti Zulaiha Ahmad, Nik Noor Amalina Amirah Nik Ludin, H. M. Ekhsan, A. F. Rosmani, M. Ismail","doi":"10.1109/CHUSER.2012.6504375","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504375","url":null,"abstract":"Reading difficulty is one of the major problems faced by dyslexic children. Reading skill is the most crucial ability as it is required in the upper level of discovery of knowledge. In this research, Phonic Reading Technique and Multisensory Approach are blended with interactive multimedia, which incorporates multimedia elements such as text, graphics, video, and animation. The manner of applying those techniques in “Bijak Membaca” is discussed. The contents of this application are specifically designed to visualize letters, words, sentences, and pronunciations in the Malay language for dyslexics, aged 7–8 years, with awareness of their characteristics. In order to evaluate the design of its content, heuristic testing is conducted among multimedia lecturers and IT undergraduates. The result reveals that the contents are well designed with the inclusion of Phonic Reading Technique, Multisensory Approach, and suitable multimedia elements. It is also concluded as interesting, user-friendly, attractive, valuable, and supportive.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115548482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 30
Spatial modeling and data management of the Persian Gulf wave atlas 波斯湾波浪图集的空间建模与数据管理
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504306
M. Moradi, K. Kabiri
During the last few years, many coastal and offshore infrastructures are being constructed or planned for oil and other marine industries in the Persian Gulf area. Long term wave data is important for the design of coastal structures and for the calculation of sediment transport rates. In this study a third-generation wave model has been used to generate 10 years (1992–2001) of wave climate atlas for the Persian Gulf. The European Center for Medium Range Weather Forecasts (ECMWF) wind field data after some modifications, and compiled bathymetry data from few sources, were employed as the input data of the model. In situ and satellite wave datasets were used to calibrate the model, and the validation of the results. The results show that the higher waves have a better accuracy over the whole Persian Gulf, and the overall accuracy is more than 80% for all simulated data. All the datasets (input and output data) were stored in a GIS-based software that was developed to provide a user friendly environment for data visualization and extraction. A multidimensional data model was developed for data management and visualization of numerical model results in the GIS environment. The integration of Relational Database Management Systems (RDBMS), and commercial GIS components used for data management and software development.
在过去几年中,正在为波斯湾地区的石油和其他海洋工业建造或规划许多沿海和近海基础设施。长期波浪资料对海岸结构的设计和输沙率的计算具有重要意义。本研究使用第三代波浪模式生成了波斯湾10年(1992-2001)波浪气候图谱。模型的输入数据采用欧洲中期天气预报中心(ECMWF)经修改后的风场数据和少数来源的水深数据。利用现场和卫星波资料对模型进行了标定,并对结果进行了验证。结果表明,在整个波斯湾地区,较高的波浪具有较好的精度,所有模拟数据的总体精度都在80%以上。所有数据集(输入和输出数据)都存储在基于gis的软件中,该软件的开发为数据可视化和提取提供了一个用户友好的环境。为了在GIS环境下对数值模型结果进行数据管理和可视化,开发了一个多维数据模型。关系数据库管理系统(RDBMS)与用于数据管理和软件开发的商业GIS组件的集成。
{"title":"Spatial modeling and data management of the Persian Gulf wave atlas","authors":"M. Moradi, K. Kabiri","doi":"10.1109/CHUSER.2012.6504306","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504306","url":null,"abstract":"During the last few years, many coastal and offshore infrastructures are being constructed or planned for oil and other marine industries in the Persian Gulf area. Long term wave data is important for the design of coastal structures and for the calculation of sediment transport rates. In this study a third-generation wave model has been used to generate 10 years (1992–2001) of wave climate atlas for the Persian Gulf. The European Center for Medium Range Weather Forecasts (ECMWF) wind field data after some modifications, and compiled bathymetry data from few sources, were employed as the input data of the model. In situ and satellite wave datasets were used to calibrate the model, and the validation of the results. The results show that the higher waves have a better accuracy over the whole Persian Gulf, and the overall accuracy is more than 80% for all simulated data. All the datasets (input and output data) were stored in a GIS-based software that was developed to provide a user friendly environment for data visualization and extraction. A multidimensional data model was developed for data management and visualization of numerical model results in the GIS environment. The integration of Relational Database Management Systems (RDBMS), and commercial GIS components used for data management and software development.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116502729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
期刊
2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1